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US6577026B1 - Circuit arrangement for supplying electric power to a network comprising a fuel cell and an accumulator system - Google Patents

Circuit arrangement for supplying electric power to a network comprising a fuel cell and an accumulator system Download PDF

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Publication number
US6577026B1
US6577026B1 US09/623,911 US62391100A US6577026B1 US 6577026 B1 US6577026 B1 US 6577026B1 US 62391100 A US62391100 A US 62391100A US 6577026 B1 US6577026 B1 US 6577026B1
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United States
Prior art keywords
fuel cell
converter
accumulator
mode
circuit arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US09/623,911
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English (en)
Inventor
Peter Faller
Axel Jansen
Andreas Schell
Josef Sonntag
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Mercedes Benz Fuel Cell GmbH
Original Assignee
Ballard Power Systems AG
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Filing date
Publication date
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Assigned to XCELLSIS GMBH reassignment XCELLSIS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHELL, ANDREAS, FALLER, PETER, JANSEN, AXEL, SONNTAG, JOSEF
Assigned to BALLARD POWER SYSTEMS AG reassignment BALLARD POWER SYSTEMS AG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: XCELLSIS GMBH
Application granted granted Critical
Publication of US6577026B1 publication Critical patent/US6577026B1/en
Assigned to FUEL CELL SYSTEMS GMBH reassignment FUEL CELL SYSTEMS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BALLARD POWER SYSTEMS AG
Assigned to NUCELLSYS GMBH reassignment NUCELLSYS GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUEL CELL SYSTEMS GMBH
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0438—Pressure; Ambient pressure; Flow
    • H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
    • B60L58/31—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for starting of fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/40—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for controlling a combination of batteries and fuel cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M16/00—Structural combinations of different types of electrochemical generators
    • H01M16/003—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers
    • H01M16/006—Structural combinations of different types of electrochemical generators of fuel cells with other electrochemical devices, e.g. capacitors, electrolysers of fuel cells with rechargeable batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
    • H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04544—Voltage
    • H01M8/04559—Voltage of fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04574—Current
    • H01M8/04589—Current of fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04746—Pressure; Flow
    • H01M8/04753—Pressure; Flow of fuel cell reactants
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

  • the present invention relates to a circuit arrangement for supplying electrical energy to a power supply which has a fuel cell and an accumulator device which delivers electrical energy during the starting procedure.
  • a fuel cell and an accumulator arrangement are connected to one another by a diode whose polarity prevents a flow of current from the accumulator arrangement to the fuel cell, to prevent outgassing while the fuel cell is idle.
  • the voltage of the accumulator arrangement can be applied to the fuel cell for starting purposes, by shorting the diode via a resistor and a switch connected in series therewith. A comparatively small current then flows and changes the individual cells in the fuel cell to the correct direction of polarity.
  • German patent document DE 197 37 406 A1 the fuel cell and the accumulator arrangement have a permanent, direct-electrical connection between them, irrespective of the operating state of the fuel cell. It is thus possible for outgassing to occur in this arrangement while the fuel cell is idle. In this case, energy is supplied to a motor and to any other loads as a result of these loads being connected to the fuel cell and to the accumulator arrangement by means of a DC/DC converter.
  • German patent document DE 44 31 747 A1 Another circuit arrangement is disclosed in German patent document DE 44 31 747 A1, in which a fuel cell is connected to other units of a power supply via a DC/DC converter.
  • One of the other units is a battery.
  • a diode is provided, whose direction of polarity prevents a flow of current from the battery to the fuel cell via the DC/DC converter.
  • auxiliary units for their operation. If these auxiliary units are operated electrically, they are supplied with electrical energy by the fuel cell during operation.
  • a mobile energy generation system having fuel cells such as a vehicle powered by fuel cells, is not operated continuously; rather, operating pauses occur, and the energy generation system needs to be restarted after such operating pause. Since the energy for driving the auxiliary units is not yet being provided by the fuel cell at the instant of starting, each auxiliary unit requires one or more additional starter units which, if driven electrically, are supplied with electrical energy from a battery.
  • the object of the present invention is to simplify the starting procedure for a fuel cell.
  • the circuit arrangement according to the present invention in which electrical energy is fed into the power supply by the accumulator arrangement via at least one DC/DC converter during the starting procedure.
  • energy can advantageously be supplied to the auxiliary units during starting via the accumulator arrangement, thereby eliminating the need for additional starter units.
  • the auxiliary units are put into operation by means of the accumulator arrangement at the beginning of the starting procedure.
  • the DC/DC converter(s) can be used to replace one or more starter units.
  • the DC/DC converter is connected such that the accumulator arrangement is supplied with electrical energy from the power supply.
  • the on-board charger which is required anyway for charging the accumulator arrangement, can be used for the purpose of charging the accumulator arrangement.
  • Equivalent components such as transformers, power MOSFETs, capacitors etc. can advantageously be used both for charging the accumulator arrangement and for the starting procedure. During rated operation of the fuel cell, the accumulator arrangement is thus recharged by means of the at least one DC/DC converter.
  • the DC/DC converter automatically distinguishes between rated operation and the starting mode, and changes over accordingly. This simplifies operation of the fuel cell by automatically setting the DC/DC converter to the correct state.
  • the DC/DC converter can be changed over between the starting mode and rated operation by means of an external signal, which may be output by a control unit, for example.
  • an external signal which may be output by a control unit, for example.
  • the DC/DC converter can be accordingly switched such that electrical energy is fed into the power supply by the accumulator arrangement via the DC/DC converter.
  • the DC/DC converter can be accordingly controlled such that electrical energy is transferred to the accumulator arrangement from the power supply, which charges the accumulator arrangement.
  • the DC/DC converter delivers a signal when it is ready for the starting mode or rated operation, so that the starting procedure can advantageously begin at the correct instant.
  • the DC/DC converter charges the intermediate circuit capacitors of the auxiliary units during startup, which thus dispenses with the need for a separate recharging circuit.
  • FIG. 1 is a block diagram which shows the components used according to the invention
  • FIG. 2 is a flowchart showing the switch position and appropriate changeover of a two-way DC/DC converter
  • FIG. 3 shows an energy generation system for a fuel cell vehicle.
  • an accumulator arrangement 102 is connected to the fuel cell DC power supply 105 via one or more DC/DC converters 101 .
  • the accumulator arrangement 102 is supplied with electrical energy (that is, charged), by the fuel cell 103 via the DC/DC converter 101 .
  • the DC/DC converter 101 advantageously has a two-way design, for operation in both conversion directions.
  • energy can be transferred from the power supply 105 to the accumulator arrangement 102 , so that the accumulator arrangement 102 is charged in rated operation of the fuel cell 103 ; or energy can be transferred from the accumulator arrangement 102 to the power supply 105 , which assures the supply of energy during a starting procedure.
  • the DC/DC converter 101 is able to distinguish between the starting procedure and rated operation, based on the prevailing voltage conditions, for example.
  • the DC/DC converter 101 can then change over according to the requirement at the present time.
  • the DC/DC converter 101 delivers a signal when the changeover operation has ended and the DC/DC converter 101 is ready for the starting procedure or rated operation.
  • FIG. 1 also shows auxiliary units 104 , which may be, for example, a compressor for conveying the fuel and/or the oxidant.
  • FIG. 2 is a flowchart which shows the switch position and appropriate changeover of a two-way DC/DC converter 101 .
  • the DC/DC converter is switched to the starting mode, either by an external signal from a control unit or else by the DC/DC converter 101 recognizing the starting procedure in step 202 , as previously described.
  • step 203 a check is carried out to verify that the DC/DC converter 101 is in the starting mode. If so, the process passes to step 204 , where the output voltage of the DC/DC converter 101 rises, charging the latter's internal capacitors and the intermediate circuit capacitors of the auxiliary units. Consequently, precharging circuits for the auxiliary units can advantageously be dispensed with.
  • the DC/DC converter delivers a ready signal for the starting mode. This ready signal may be supplied to a control unit, for example.
  • a starting procedure is then carried out, in which the auxiliary units are started by the control unit 106 .
  • the fuel cell is put into operation.
  • step 205 a check is carried out to determine whether the fuel cell voltage U BZ exceeds the DC/DC converter output voltage U DC . If so, the DC/DC converter advantageously changes over from the starting mode to the charging mode, step 206 .
  • the voltage conditions can be recognized directly by the DC/DC converter. It is also possible for the control unit to output a signal to the DC/DC converter in order to prompt it to change over.
  • step 207 it is verified that the DC/DC converter is in the charging mode; i.e., whether it has output the appropriate ready signal.
  • step 208 the fuel cell is then in rated operation.
  • the DC/DC converter additionally delivers a temperature signal which may be a digital overtemperature signal or an analogue temperature signal.
  • FIG. 3 shows a schematic illustration of an energy generation system for a fuel cell powered vehicle.
  • a fuel cell 1 is supplied with fuel, for example hydrogen or methanol, by means of a first supply line 2 .
  • a second supply line 3 containing a compressor 4 , is used to supply the fuel cell 1 with an oxidant, for example ambient air.
  • the fuel is oxidized at the anode and the oxidant is reduced at the cathode.
  • a voltage is produced between two electrodes.
  • Gasses are removed from the fuel cell 1 via a discharge line 12 .
  • a drive unit 11 is provided to drive the vehicle.
  • the control unit 10 receives, via electrical lines, information about the oxidant mass flow dm/dt, the operating state of the drive unit 11 and the voltage U produced by the fuel cell 1 , and the corresponding current I.
  • an electric motor 5 is provided which is supplied with electrical energy via a converter 6 .
  • the latter is controlled by the control unit 10 , which sets the speed n of the electric motor 5 , and hence of the compressor 4 .
  • the speed n of the compressor 4 can be used to influence the oxidant mass flow dm/dt, and hence the power P BZ of the fuel cell 1 .
  • the other (besides the compressor 4 ) auxiliary units 9 required for operating the fuel cell 1 , are likewise supplied with electrical energy via the converter 6 or via dedicated converters.
  • the starter battery 8 which supplies the necessary auxiliary energy to the electric motor 5 and to the further auxiliary units 9 via the DC/DC converter 7 and the converter 6 during the starting procedure.
  • the DC/DC converter 7 is necessary in order to bring the voltage level of the starter battery 8 into line with the voltage level of the fuel cell 1 .
  • the starter battery 8 is supplied with electrical energy, that is to say is charged, from the fuel cell 1 via the DC/DC converter 7 .
  • the voltage of the fuel cell 1 is again brought into line with the voltage level of the starter battery 8 in the DC/DC converter 7 .

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  • Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fuel Cell (AREA)
US09/623,911 1998-03-11 1999-02-23 Circuit arrangement for supplying electric power to a network comprising a fuel cell and an accumulator system Expired - Lifetime US6577026B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19810468A DE19810468A1 (de) 1998-03-11 1998-03-11 Schaltungsanordnung zur elektrischen Energieversorgung eines Netzes, das eine Brennstoffzelle sowie eine Akkumulatoranordnung aufweist
DE19810468 1998-03-11
PCT/EP1999/001146 WO1999046845A1 (fr) 1998-03-11 1999-02-23 Circuit pour alimenter en energie electrique un reseau comprenant une pile a combustible et un systeme d'accumulation

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US6577026B1 true US6577026B1 (en) 2003-06-10

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US09/623,911 Expired - Lifetime US6577026B1 (en) 1998-03-11 1999-02-23 Circuit arrangement for supplying electric power to a network comprising a fuel cell and an accumulator system

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US (1) US6577026B1 (fr)
EP (1) EP1062716B1 (fr)
JP (1) JP2002507049A (fr)
DE (2) DE19810468A1 (fr)
WO (1) WO1999046845A1 (fr)

Cited By (15)

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US20040262058A1 (en) * 2003-04-22 2004-12-30 Webasto Ag Vehicle electrical system with fuel cell and process for operating an electrical consumer in such a vehicle electrical system
WO2005021316A1 (fr) * 2003-08-28 2005-03-10 Nissan Motor Co., Ltd. Dispositif de commande pour vehicule, a pile a combustible montee dessus
US20060083955A1 (en) * 2004-10-19 2006-04-20 Akihiko Kanouda Mobile type information terminal and self diagnosis method and operation method thereof
US20060210841A1 (en) * 2005-03-15 2006-09-21 Wallace Andrew P Modular fuel cell power system, and technique for controlling and/or operating same
US7166985B1 (en) * 2002-03-05 2007-01-23 Jadoo Power Systems, Inc. Fuel cell power system having a plurality of rack fuel cell power modules
US20070248851A1 (en) * 2006-04-24 2007-10-25 Andrew Paul Wallace Fuel cell power system having dock-type device, and technique for controlling and/or operating same
US20090112384A1 (en) * 2007-10-26 2009-04-30 Hyundai Motor Company Startup sequence control method of fuel cell-super capacitor hybrid electric vehicle
US20090233129A1 (en) * 2008-03-13 2009-09-17 Honda Motor Co., Ltd. Method of starting operation of fuel cell system
US20100001587A1 (en) * 2008-07-01 2010-01-07 Satcon Technology Corporation Photovoltaic dc/dc micro-converter
US20110217615A1 (en) * 2008-06-13 2011-09-08 Ceramic Fuel Cells Limited Fuel cell stabilisation system and method
US20120088170A1 (en) * 2010-10-12 2012-04-12 Heo Jin S Fuel cell system and method of operating the same
US9048353B2 (en) 2008-07-01 2015-06-02 Perfect Galaxy International Limited Photovoltaic DC/DC micro-converter
US20150295401A1 (en) * 2012-09-28 2015-10-15 Infintium Fuel Cell Systems (Shanghai) Co., Ltd. Compact Type Fuel Cell Supply System
WO2015154852A1 (fr) * 2014-04-10 2015-10-15 Daimler Ag Procédé de démarrage du fonctionnement normal
US9216661B2 (en) * 2012-09-28 2015-12-22 Infintium Fuel Cell Systems (Shanghai) Co., Ltd. Fuel cell mixed power supply energy management method

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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DE19810468A1 (de) 1999-09-16
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WO1999046845A1 (fr) 1999-09-16
EP1062716B1 (fr) 2006-10-04
DE59913897D1 (de) 2006-11-16

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